EXTRACTION MIXTURE FOR EXTRACTING ACTINIDE ELEMENTS FROM ACIDIC SOLUTIONS (OPTIONS)

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FIELD : radiochemical engineering. SUBSTANCE : extraction mixture comprises 0.1-1.2 M solution of bidentate organophosphorous extractant in polar fluorinated diluent, the former, more particularly, being dihexyl N, N-diethylcarbamoylphosphonate and the latter bis-tetrafluoropropyl ether of diethylene glycol. Extraction mixture may include 0.1-1.2 M phenyloctyl-N, N-diisobutylcarbamoylphosphine oxide in polar diluent as bidentate organophosphorous extractant, wherein polar diluent is m-nitrobenzotrifluoride/trialkyl phosphate mixture and content of trialkyl phosphate in extraction mixture is 0.3-1.1 M. EFFECT : enabled simultaneous extraction of transplutonium, rare-earth elements, and uranium. 2 cl, 2 dwg, 2 tbl, 4 ex